Ventilating system.



LLC. sTRoH.

VENTILATING SYSTEM.

APPLICATION FILED APB. 23, 1909.

Patented Nov. 22, 1910.

Z SHEETS-SHEET Z.

atkmuf Application 'led April 23, '1909. Serial No. 491,764.

To .all-.whomit may concern.

f .Beit known that I, JOHN C. S'rRoH, a citizen of the` United States, residing at Drif-l ton, in the county of Luzerne, State Fof Pennsylvania, have invented certain new and useful `Improvements in Ventilating Systems; and I o hereby declare the following to be a full, clear,`a.nd exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. y

This invention' relates to ventilatin sys- K tems and has special reference tofventi ating systems for railway cars althou h the same may be used for VVentilating ouses and other places oflike character.

One vobject of the invention is to improve systemsv of this character so that not only the also an equable pressure maybe assured at all times, thus prevent-ing the uncomfortable oppression 'of t e plenum system.

Another object of the invention is to pro vide a Ventilating system in which the supply of air will be of uniformI temperature without regard to the Season of the year or the outside conditions. p v

A, third object ofthe invention is to provide an improved Ventilating systemv wherein the foul air will be drawn off ositively as fast as the fresh air is pumped) into the system.

With the above and other objects in view the invention consists in general of a plenum fan arranged to pump air into an apartment, a heater, a cooler, and a series of vacuum fans each having its individual inlet and outlet, all being of a novel and improved arrangement.

The invention further consists in such novel features of construction and combination of arts vhereinafter fully described, illustrate in the accompanying drawings, and specifically set forth in the claim.

In the accompanying drawings, like characters of reference indlcate likeparts in the several views, and Figure 1 is a side view of a car equipped in accordance with this in. vention, the side of the car being'broken away to show-the interior arrangement of piping and other parts. Fig. 2 is a longitudinal horizontal section on the line 2-2 of Fig. 1. Fig. 3 is a transverse section-on the line 3-3 of Fig. 1. Fig. 4 is an enlarged STATES PATENT .orrron specimen ofneaersrmnf. patented Nov. 22, icio.

detail viewI of oneof thevacuuni fans and its connected parts. Fig. 5 is across section on the line 5 5 of Fig. 1'. v Fig. 6 isa horizontal section through the end of the intake 1pe. p The numeral 10 indicates a car body and in this body, Apreferably on ythe iioor thereof, is'held a plenum -tan 11 operated by a vsuitable motor, reciprocal of which is here indicated an electric motor 12. From the fan 11 extends an intake pipe '13 which runs down through the bottom of the car or apartment and from this fan also extends a delivery pipe 14. This delivery pipe 14 is provided w1th a cut oi valve 15 and from the pipe 14 at various points are led off banch pipes 16 terminating in outlet pipes 1 length of the car and at the end opposite the valve 11 is provided with a valve 18 for the purpose of cutting oi any other car. The delivery pipe 14 also extends beyond this valve and is provided on its outer end with a coupling 19 which enables one fan to supply a series of coupled cars, the -other cars arranged similar tothe first car but without the fan and other apparatus now to be described.

Adjacent the-fan end of the delivery ipe 14 is a heater 20 located in-a bylpass rom the delivery ipe, the inlet of the heater being indicatedp by the numeral 21 and the outlet from the heater being indicated by the numeral 22. Valves 23 are rovided in both v the inlet and outlet pipes o this by-pass so that the passa e of air through the heater may be proper y regulated. Also adjacent the fan end of the delivery pipe 14 is a cooler 24. The cooler 24 is of any preferred construction and located in a by-pass ofthe pipe 14 being provided with an inlet pipe 25 communicating with the pipe 14 and an outlet pipe 26 also communicating withthat pipe. Both the inlet and outlet pipe 25 and 26 are provided with valves 27 for the vpurpose of controlling the flow of cool air through the cooler 24.

The terminal pipes 17 are so arranged that they lie as close to the floor as possible and their outlet ends accordingly admit fresh air near theioor of the car.

Suitabl positioned in the roof of the car are venti ators 28 arranged in series along the roof and each of these ventilators is pro- The delivery pipe 14 runs the entirevided with a vacuum fan 29 actuated by a suitableymotor, here illustrated as an electric motor 30 direct connected to the fan.

The heater 20 may be of any desired type such as a steam or electric heated coil and the coolermay be ice cooled or vcooled-by means of a suitable ammonia compression machine carried on the en ine or in any other Way desired. These eatures are not deemed necessary here to be shownv as the specific arrangement of the heater and cooler form no part of the invention.

In the operation of this device the temperature of the air is regulated by the roper adjustment of the valves 23 and 27 ta en t0- gether with the valve 15. For instance, if the air in the car is too cool the valves 23 are lopened and the valve 15 either Wholly or partially closed so that the fresh air is driven through the heater. On the contrary if the air in the car is too warm theV valve 15 is either partially or whollyclosed and the valves 27' opened while' the valves Q3 are closed. In this manner the correct` manner the pressure is regulated to a nicety.

In order to prevent t e introduction of dust and flying paper into the in-take pipe this in-take is provided with a metallic perforated guard 31 surrounding the in-take end of the pipe on both sides of this guard are dust shields 32. The perforated guard Maase high mountain passes is further provided with a coveri of haircloth 3 3 so that the air isthorough y ltered before admission to .the in-take pipe.

There has thus been -provided a simple and efficient device of the kind described and `for the purpose specified,

l It is obvious'that minor changes may be made in the form and construction of this.

from the n1a' invention without departin terial principles thereof. t is not therefore desired to confine the invention to the exact form herein shown and described,` but it Yis wished toy include all such las come properly Within the scope of the appended claim.

Having thus described my invention, what is claimed as new, is Y In a device of the kind described, a railroad car, and means to ventilate said car, said means being also adapted-to maintain an equable pressure Within the car without reference to the barometric pressure outside of said car, saidmeans comprising an inlet duct, a plenum fan connected to said duct to force air into the car, a motor actuating said plenum fan, speed controlling means for said motor, an outlet duct leading from said car, a vacuum fan connected to said outlet duct to force air` out of the car, a motor actuating said vacuum fan, and speed controlling `means for the last mentioned mo'tor, the last mentioned motor and [its speed controlling means being independent of the firstvmentioned motor kand speed controlling means whereby the plenum'and vacuum fans may berun at different rates of speed. w

In testimony whereof, I ax my` signature, -in presence of tvvo Witnesses.

JOHN C. STROH. IVitnesses: f

DANIEL S. BUCKLEY, P. B. MCTIGHE. 

